I'm inclined to believe that this is a mistake - "extraordinary claims require extraordinary evidence" and all that. ...However, since hypothetically this coul

I'm inclined to believe that this is a mistake - "extraordinary claims require extraordinary evidence" and all that. ...However, since hypothetically this could happen, how could it be prevented? Would there be some unbreakable way for a manufacturer to tell you if the keyboard had been tampered with? I was thinking of those silver foils that are now put over a lot of food items so that crazies can't put stuff in them in the supermarket. I appreciate wrapping it in plastic probably wouldn't be enough to defeat the security services, but you get the idea.